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TRANSCRIPT
Level measurement in bulk solids
One technology, two instruments, all bulk solids
Contents
VEGA radar technology – now also for bulk solids 3
One technology, two instruments, all bulk solids 4
Radar – ideal for all bulk solids 5
VEGAPULS 67: The newcomer in the VEGA radar team 6
VEGAPULS 68: The specialist for extreme application conditions 8
Radar solutions for the aggregates and mining industry 10
Radar solutions for the steel industry 11
Radar solutions for the chemical industry 12
Radar solutions for the food industry 13
plics® – the idea with a future 14
Technical data 15
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VEGA radar technology – now also for bulk solids
Worldwide success with radar
VEGA Grieshaber is a world-leading company of level, switching and pressure instrumentation. In 1997 VEGA introduced the world’s first two-wire radar sen-sor. Two years later, VEGA advanced to international market leader in the area of radar level measurement. Radar has become widely accepted as the reliable standard technology for measurement of liquids – and with the radar instruments of Era II, VEGA has set a new standard for radar in continuous level measure-ment of bulk solids.
How it all began: the eric® radar story
The most successful radar level measu-ring instrument in the world is called eric®. In 1997 this instrument revolu-tionised the market and within a very short time became international market leader in the area of level measure-ment with radar technology. As the first 2-wire radar instrument, eric® combined
easy handling with high process reliability. Since 2003 eric® has been available in the compact housing of the plics® modular system. Today, eric® represents Era II of reliable bulk solids measurement.
One technology, two instruments, all bulk solids
Optimum technology for level measure-
ment of bulk solids
The technology: advanced VEGA radar with optimi-sed signal processing. The two instruments: the universal VEGAPULS 67 and the extremely robust VEGAPULS 68. All bulk solids: where until now compromise solu-tions were necessary due to extreme dust generation, unfavourable material surface geometry, filling noise and difficult installation conditions, VEGAPULS 67 and VEGAPULS 68 are the ideal solution.
A complete range of radar products
From the most demanding application conditions to areas where radar was simply too expensive until now: VEGAPULS solves any problem. Thanks to its high reliability, VEGAPULS 68 gives a convincing performance under extreme conditions and is thus the radar specialist for the toughest of applications. VEGAPULS 67 was developed for measurement problems that up to now were solved mainly with ultra-sound technology. Here, VEGAPULS offers superior measurement reliability at very low instrument cost.
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Radar – ideal for all bulk solids
VEGAPULS 67 VEGAPULS 68 Guided microwave
Ultrasonic Capacitive
Non-contact measurement ■ ■ ■
Two-wire technology ■ ■ ■ ■
Measurement during filling ■ ■ ■ ■
Unaffected by dust generation ■ ■ ■ ■
Unaffected by air currents ■ ■ ■ ■
Unaffected by noise generation ■ ■ ■ ■
Free of mechanical loads ■ ■ ■
Independ. of product characteristics ■ ■ ■ ■
Reliable in narrow silos ■ ■ ■ ■
Application in high pressures up to 2 bar up to 40 bar ■ ■
High measuring range up to 15 m up to 70 m ■
Application in high temperatures up to 80 °C up to 200 °C ■ ■
Maintenance-free ■ ■ ■
VEGAPULS 67 and VEGAPULS 68:
for all bulk solid applications
Non-contact measurement, therefore wear and maintenance-freeUnaffected by dust generationNo signal loss during pneumatic fillingNot influenced by filling noiseReliable measurement due to wide dynamic range Dust Ex approvalGas Ex approval
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VEGAPULS compared with
other measuring principles
Appl
icat
ion
spec
trum
Unaffected by process conditions
Extended application range through radar
Through VEGA radar technology, bulk solids le-vel measurement is largely unaffected by process conditions and is therefore superior to capacitive measurement as well as ultrasonic measurement and measurement with guided microwaves.
VEGAPULS 68
VEGAPULS 67
GeführteMikrowelle
Ultraschall
Kapazitiv
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Where ultrasonic measurement fails
Like all radar technologies, VEGAPULS 67 operates contactlessly and is therefore suitable for abrasive and corrosive products. Unaffected by air turbulence and noise, it delivers reliable measurement values even during pneumatic filling. Pressure and extreme dust generation also have no effect. VEGAPULS 67 is thus suitable for practically all areas of production.
Measuring range up to 15 mPressure up to 2 barTemperatures up to 80 °C
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VEGAPULS 67: The newcomer in the VEGA radar team
Radar reliability at entry level price
Before there was VEGAPULS 67, ultrasonics was implemented in many cases just for price reasons. If contactless level measurement was required, the system deficiencies of ultrasonics had to be accepted perforce. VEGAPULS 67 puts an end to these com-promises and provides radar technology at ultrasonic prices.
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VEGAPULS 67
Measuring range up to 15 m
Temperature -40 … +80 °C
Pressure from vacuum to max. 2 bar
Antenna plastic encapsulated antenna
Swivelling mechanism via mounting strap
Voltage supply 4 … 20 mA/HART, Profibus PA, Foundation Fieldbus
Antenna diameter 75 mm
Beam angle 10°
Process fitting mounting strap
compression flange DN 80 / ANSI 3"
adapter flanges from DN 100 / ANSI 4"
TechnologyImpedance cone
PP antenna lens
Metallizedplastic horn
Holders for mounting strap
The impedance cone distributes the micro-waves evenly in the interior of the antenna. The metallised inner surface directs the microwave signals to the product.
Advantages ■ light-weight and compact design with very good focussing
■ optimum protection against condensation and dirt through hermetically sealing antenna lens
■ easy mounting with mounting strap, compression flange or adapter flange
Optimised radar signal
processing for bulk solids
Because the typical uneven surfaces of bulk materials in silos generate different echo signals than liquid surfaces, the evaluation algorithms of VEGAPULS have been adapted to different reflection characteristics. Through the implementation of practi-ce-oriented application parameters, the user has only to make a few basic adjustments to adapt the sensor to a particular application.
VEGAPULS 68: The specialist for extreme application conditions
Heat, dust, height: elegantly overcome
VEGAPULS 68’s application range also covers the most extreme level measuring conditions in bulk so-lids. The instrument delivers reliable level data even under high temperatures, such as in steel production. Dusty conditions in power plant coal processing facilities or in building material storehouses do not bother VEGAPULS 68 in the least. The wide dynamic range of the sensor also opens up new possibilities for applications with powders and granulates in the food and chemical industries.
Very high sensitivity through improved
technology
Thanks to optimised VEGA radar technology, the sensor of VEGAPULS can process signals up to a thousand times smaller than those normally handled by conventional radar instruments. This high sensitivity enables measuring ranges up to 70 m, even for pro-ducts with poor reflection characteristics.
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VEGAPULS 68 with parabolic antenna
VEGAPULS 68 with horn antenna
Measuring range up to 70 m up to 70 m
Temperature -40 … +200 °C -40 … +200 °C
Pressure 3 bar 40 bar
Antennas Parabolic antenna Horn antenna
Swivelling mechanism Via mounting flange Via mounting flange
Voltage supply 4 … 20 mA/HART, Profibus PA, Foundation Fieldbus
4 … 20 mA/HART, Profibus PA, Foundation Fieldbus
Antenna diameter 245 mm 40 mm, 48 mm, 75 mm, 95 mm
Beam angle 4° 22°, 18°, 10°, 8°
Process fitting Thread from 1½" Thread from 1½"
Flange from DN 50 / ANSI 2" Flange from DN 50 / ANSI 2"
Technology
Separableantenna system
Feed system
Parabolicreflector
Robustantenna transition
Horn antenna
Inflectedantenna lip
At the focal point of the parabolic reflectoris the well-protected feed system. Theradiated microwave signal is focussed bythe antenna surface.
Via a PTFE cone at the antenna junction the microwaves are radiated towards the horn an-tenna and then focussed in the direction of the product surface.
Advantages ■ Mounting on small fittings possible throughseparable antenna system
■ Insensitive to contamination and damagedue to recessed feed system
■ Optimum focussing
■ Optimum focussing with small antenna diameters
■ Easy mounting also in small vessel sockets■ High sensitivity especially at close range
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VEGAPULS 67 for building materials,
sand, gravel, rocks
Sensor version: plastic encapsulated antenna with mounting strap
Perfect solution to the measurement problemNon-contact measurementNo abrasive wear on the sensorUnaffected by noise generationMaintenance-free operation Easy retrofitting even when silo is fullMeasuring range up to 15 m
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VEGAPULS 68 for cement, clinker
Sensor version: horn or parabolic antenna with swivelling holder
Perfect solution to the measurement problemNon-contact measurementUnaffected by dust generationNo signal loss during pneumatic fillingNo mechanical loads on the sensorUnaffected by filling noiseMeasuring range up to 70 mAntenna cleaning possible with purging air
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Radar solutions for the aggregates and mining industry
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Radar solutions for the steel industry
VEGAPULS 67 for coal, coke,
aggregates
Sensor version:plastic encapsulated antenna with mounting strap
Perfect solution to the measurement problemNon-contact measurementUnaffected by dust generationNo mechanical loads on the sensorMeasuring range up to 15 mDust Ex approval
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VEGAPULS 68 for blast furnaces
in steel production
Sensor version: horn antenna with rinsing connection for nitrogen
Perfect solution to the measurement problemNon-contact measurementNot influenced by temperatureNo errors caused by changing gas compositionsSmall sensor dimensionsMaintenance-free operationEasy retrofitting
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Radar solutions for the chemical industry
VEGAPULS 67 for fertilisers, chemicals,
salt
Sensor version: plastic encapsulated antenna with compression flange
Perfect solution to the measurement problemNon-contact measurementUnaffected by dust generationHigh sensor by chemical resistanceEasy retro installationNot influenced by product changesDust Ex approval
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VEGAPULS 68 for plastic powder,
granulate
Sensor version: horn or parabolic antenna with swivelling holder
Perfect solution to the measurement problemNon-contact measurementUnaffected by dust generationNot influenced by product changesImplementable in high, narrow silosGas and dust Ex approvals
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VEGAPULS 67 for flour, milk powder,
sugar
Sensor version: plastic encapsulated antenna with compression flange
Perfect solution to the measurement problemNon-contact measurementMeets strict hygienic requirementsNo signal loss during pneumatic fillingInsensitive to dustNot influenced by product changesDust Ex approval
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VEGAPULS 68 for cereals, rice
Sensor version: horn or parabolic antenna with swivelling holder
Perfect solution to the measurement problemNon-contact measurementUnaffected by dust generationNo signal loss during pneumatic fillingUnaffected by filling noiseMeasuring range up to 70 mDust Ex approval
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Radar solutions for the food industry
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Indicating and adjustment module
PLICSCOM
Housings
Plastic Stainless steel
Aluminium Aluminium (2 chamber)
Electronics
Two-wire4 ... 20 mA/HART
Profibus PA Foundation Fieldbus
Four-wire4 ... 20 mA/HART
Process fittings
Thread Flange Mounting strap Swivelling holder
Radar sensors
Encapsulatedantenna
Parabolic antenna Horn antenna
Easier is better
plics® makes the world of measurement technology easier to understand – from selection to ordering to setup, and of course when it comes to maintenance and service, too. This is because the handling and technical configuration of each instrument are always in conformity with the systematic modular concept – standardised housings, a uniform adjustment pro-cedure and noticeable cost reduction, from selection to servicing.
plics® – the idea with a future
VEGAPULS 67 VEGAPULS 68
Measuring range up to 15 m up to 70 m
Temperature -40 … +80 °C -40 … +200 °C
Pressure vacuum up to max. 2 bar vacuum up to max. 40 bar
Antennas plastic-encapsulated antenna parabolic antenna
horn antenna
Swivelling mechanism via mounting strap via mounting flange
Air purging connection no yes
Flange sizes DN 80 … DN 150 from DN 50
Approvals ATEX II 1/2 D IP6X T ATEX II 1 G, 1/2 G, 2 G EEx ia IIC T5
ATEX II 1/2 D IP6X T
Pluggable electronics 4 … 20 mA/HART two-wire 4 … 20 mA/HART two-wire
4 … 20 mA/HART four-wire 4 … 20 mA/HART four-wire
Profibus PA Profibus PA
Foundation Fieldbus Foundation Fieldbus
Technical data
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VEGA Grieshaber KGAm Hohenstein 11377761 SchiltachGermanyPhone +49 7836 50-0Fax +49 7836 50-201e-mail [email protected]
331
74-E
N-0
7060
1
Mar
schn
er+K
ühn